I've managed to make it run on Linux and had a great first 2h so far. Love the new engine, although animating characters still seems to be a challenge for Falcom. The characters still do this Playstation 2 rotating thing when they turn around :)
The new mechanics feel amazing and the story has been intriguing so far.

I installed the GOG setup file manually on Lutris (no installer yet). The game wouldn't start at first, but after installing vcrun2022 via winetricks, everything runs perfectly!

Specs:
---------
Manjaro Linux
Lutris 0.5.17-8 with Proton (Version: lutris-GE-Proton8-8-x86_64)
Kernel: 6.10.13 x86_64
Mesa: 24.2.4-0.1
AMD Ryzen 5 2600 6-Core
AMD Radeon RX 5700, Driver: amdgpu
Display 1920x1080~60Hz
SSD drive

I've been running Ys X on my Steamdeck through GOG Galaxy 2.0 using Proton 9.0-3. I had to disable the GOG overlay to get the game to recognize button presses but otherwise it runs great!